
Botryoidal Agate/Chalcedony Cluster
This appears to be a cluster of agate nodules, potentially a form of chalcedony or common opal. The piece is irregular in shape and roughly fits within the dimensions of a human hand. It is composed of numerous botryoidal formations, which are rounded, lumpy clusters resembling grapes. The colors present are predominantly milky white to translucent grey, with significant areas of a rich, translucent orange-brown, suggesting the presence of iron inclusions or other trace elements. There are areas of darker, earthy material clinging to the surface, likely remnants of the surrounding matrix. The surface texture is variably smooth and glossy in the botryoidal areas, transitioning to rough where matrix is present. The milky white areas exhibit some internal cloudiness and banding. The orange-brown section is particularly translucent and has a high polish, reflecting light readily. There are no discernible manufacturing marks, signatures, or stamps as this is a natural mineral formation. The estimated age is geological. The condition appears natural, with no signs of polishing or cutting beyond its natural formation. It represents a natural Specimen.
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Estimated Value
$100-250
Basic Information
Category
Mineral/Rock
Appraised On
August 28, 2025
Estimated Value
$100-250
Item Description
This appears to be a cluster of agate nodules, potentially a form of chalcedony or common opal. The piece is irregular in shape and roughly fits within the dimensions of a human hand. It is composed of numerous botryoidal formations, which are rounded, lumpy clusters resembling grapes. The colors present are predominantly milky white to translucent grey, with significant areas of a rich, translucent orange-brown, suggesting the presence of iron inclusions or other trace elements. There are areas of darker, earthy material clinging to the surface, likely remnants of the surrounding matrix. The surface texture is variably smooth and glossy in the botryoidal areas, transitioning to rough where matrix is present. The milky white areas exhibit some internal cloudiness and banding. The orange-brown section is particularly translucent and has a high polish, reflecting light readily. There are no discernible manufacturing marks, signatures, or stamps as this is a natural mineral formation. The estimated age is geological. The condition appears natural, with no signs of polishing or cutting beyond its natural formation. It represents a natural Specimen.
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